Gen. Mark Milley, the Army's top officer, has directed a shake-up of the Army staff to beef up his role overseeing the service's $143 billion big-ticket modernization portfolio, transferring day-to-day responsibilities for the Army Requirements Oversight Council from the deputy chief of staff for operations (G-3/5/7) to the deputy chief of staff for programs (G-8). Last month, Milley -- the Army chief of staff -- formally deputized the G-8 as the lead for all material requirements, and to support this...